These entries are queried from radb.net using whois, you can try my project getting these.
:AS-NEXTGEN as-set: AS-NEXTGEN descr: SC NextGen Communications SRL members: AS48161 members: AS52149 members: AS50660 members: AS50150 members: AS39260 members: AS39277 members: AS47792 members: AS39815 members: AS28925 members: AS57691 members: AS50357 members: AS39543 members: AS39861 members: AS57746 members: AS51328 members: AS50680 members: AS57790 members: AS-NETVEILLANCE members: AS-NEWCOMTEL members: AS62445 members: AS62448 members: AS59892 members: AS33977 members: AS35505 members: AS60033 members: AS-EFECT members: AS62388 members: AS56432 members: AS43295 members: AS47345 members: AS39276 tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: NG-MNT created: 2010-03-01T12:52:45Z last-modified: 2023-07-19T10:23:20Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: ****************************